1 /* 2 * Copyright 2016 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 21 * USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 #ifndef ST_PBO_H 25 #define ST_PBO_H 26 27 struct gl_pixelstore_attrib; 28 29 struct st_context; 30 31 struct st_pbo_addresses { 32 int xoffset; 33 int yoffset; 34 unsigned width; 35 unsigned height; 36 unsigned depth; 37 38 unsigned bytes_per_pixel; 39 40 /* Everything below is filled in by st_pbo_from_pixelstore */ 41 unsigned pixels_per_row; 42 unsigned image_height; 43 44 /* Everything below is filled in by st_pbo_setup_buffer */ 45 46 /* Buffer and view. */ 47 struct pipe_resource *buffer; /* non-owning pointer */ 48 unsigned first_element; 49 unsigned last_element; 50 51 /* Constant buffer for the fragment shader. */ 52 struct { 53 int32_t xoffset; 54 int32_t yoffset; 55 int32_t stride; 56 int32_t image_size; 57 int32_t layer_offset; 58 } constants; 59 }; 60 61 bool 62 st_pbo_addresses_setup(struct st_context *st, 63 struct pipe_resource *buf, intptr_t buf_offset, 64 struct st_pbo_addresses *addr); 65 66 bool 67 st_pbo_addresses_pixelstore(struct st_context *st, 68 GLenum gl_target, bool skip_images, 69 const struct gl_pixelstore_attrib *store, 70 const void *pixels, 71 struct st_pbo_addresses *addr); 72 73 void 74 st_pbo_addresses_invert_y(struct st_pbo_addresses *addr, 75 unsigned viewport_height); 76 77 bool 78 st_pbo_draw(struct st_context *st, const struct st_pbo_addresses *addr, 79 unsigned surface_width, unsigned surface_height); 80 81 void * 82 st_pbo_create_vs(struct st_context *st); 83 84 void * 85 st_pbo_create_gs(struct st_context *st); 86 87 void * 88 st_pbo_get_upload_fs(struct st_context *st, 89 enum pipe_format src_format, 90 enum pipe_format dst_format); 91 92 void * 93 st_pbo_get_download_fs(struct st_context *st, enum pipe_texture_target target, 94 enum pipe_format src_format, 95 enum pipe_format dst_format); 96 97 extern void 98 st_init_pbo_helpers(struct st_context *st); 99 100 extern void 101 st_destroy_pbo_helpers(struct st_context *st); 102 103 #endif /* ST_PBO_H */ 104